Electronic ignition control method and apparatus
US4196705A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 19, 1978 |
| Grant date | Apr 8, 1980 |
| Priority date | — |
| Expiry date | May 19, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an electronic ignition control apparatus for a combustion engine, a first memory is provided to store a data indicating a first parameter in relation to rotation speed of the engine to read out a value of the first parameter in accordance with an instant rotation speed of the engine, the first parameter defining an ascent of a linear equation representing a relationship between an optimum period of time for spark advance and an amount of air sucked into the engine in consideration with the rotation speed, and a second memory is provided to store a data indicating a second parameter in relation to the rotation speed to read out a value of the second parameter in accordance with the instant rotation speed, the second parameter defining an ordinates' intersection of the linear equation. The control apparatus further comprises a calculation circuit for calculating the linear equation in accordance with an instant amount of the sucked air and the read-out values of the first and second parameters to obtain the optimum period of time for spark advance in relation to the instant amount of the sucked air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.